(a) find k such that f(x) is a PMF for X. (b) find P[X < 2.75]. (c) find the mean and variance of X. ne

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1. Let X be a random variable. Given the function f(x) = k(2x + 1),
x = 0, 1, 2, 3, 4,
(a) find k such that f(x) is a PMF for X.
(b) find P[X < 2.75].
(c) find the mean and variance of X.
Transcribed Image Text:for 1. Let X be a random variable. Given the function f(x) = k(2x + 1), x = 0, 1, 2, 3, 4, (a) find k such that f(x) is a PMF for X. (b) find P[X < 2.75]. (c) find the mean and variance of X.
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